Antenna unit for use in navigation system
First Claim
Patent Images
1. An antenna unit for use in a navigation system comprising:
- a bottom cover;
a unit case connectable to said bottom cover;
a circuit board and an antenna main body positionable in said bottom cover, wherein said bottom cover and said unit case comprise a continuous enclosure case for preventing ingress of contaminants,said bottom cover including a cylindrical storage portion for receiving said circuit board, and said antenna main body, said cylindrical storage portion being formed integrally with said bottom cover, said cylindrical storage portion including a first surface having first threads,said unit case having a cylindrical joint portion including a second surface having second threads, wherein said first threads are connectable with said second threads, said cylindrical joint portion being formed integrally with said unit case,said antenna unit further comprising a waterproof seal positioned between said cylindrical storage portion and said cylindrical joint portion for sealing said cylindrical storage portion.
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Accused Products
Abstract
An antenna unit for use in a navigation system includes a bottom cover and a unit case, a circuit board and an antenna main body are stored in the bottom cover, a cylindrical storage portion in the bottom cover is for storing the circuit board and the antenna main body therein, the cylindrical storage portion being formed integrally with the surface of the bottom cover, a cylindrical joint portion being threaded with the cylindrical storage portion, said cylindrical joint portion being formed integrally in the unit case, and the cylindrical joint portion being threaded with the cylindrical storage portion.
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Citations
17 Claims
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1. An antenna unit for use in a navigation system comprising:
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a bottom cover; a unit case connectable to said bottom cover; a circuit board and an antenna main body positionable in said bottom cover, wherein said bottom cover and said unit case comprise a continuous enclosure case for preventing ingress of contaminants, said bottom cover including a cylindrical storage portion for receiving said circuit board, and said antenna main body, said cylindrical storage portion being formed integrally with said bottom cover, said cylindrical storage portion including a first surface having first threads, said unit case having a cylindrical joint portion including a second surface having second threads, wherein said first threads are connectable with said second threads, said cylindrical joint portion being formed integrally with said unit case, said antenna unit further comprising a waterproof seal positioned between said cylindrical storage portion and said cylindrical joint portion for sealing said cylindrical storage portion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An antenna unit comprising:
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a case for enclosing a circuit board and an antenna main body, said case including a bottom cover and a top cover, said bottom cover including a lower surface; a stabilizing shield plate, mounted on the lower surface of said bottom cover, for stabilizing an electric wave receiving condition of said antenna unit; a cable connected to said circuit board; a draw-out opening, formed in said top cover, for drawing said cable externally out of said top cover, wherein said draw-out opening has a lower portion having a cut-away portion, a width of said cutaway portion being less than that of an outside diameter of said draw-out opening.
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9. An antenna unit comprising:
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a case for enclosing a circuit board and an antenna main body, said case including a bottom cover and a top cover, said bottom cover including a plurality of engaging wall portions respectively situated along a first circumference said engaging wall portions including a plurality of inclined projecting strips, and said top cover including a plurality of projections for connecting with said projecting strips, wherein when said top cover is rotated with respect to said bottom cover, said top cover becomes connected to said bottom cover. - View Dependent Claims (10, 11)
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12. An antenna unit comprising:
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a case for enclosing a circuit board and an antenna main body, said case including a bottom cover and a top cover, said bottom cover including side portions having a plurality of insertion portions, each insertion portion of said insertion portions having an opening facing a respective side portion of said side portions; said bottom cover including a lower portion having a plurality of securing portions; a plurality of magnets positioned in said insertion portions; and a plurality of back yokes positioned adjacent said magnets.
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13. An antenna unit comprising:
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a cover for enclosing an antenna main body and a mounting magnet, said antenna main body being connected to said cover by a magnetic force of said mounting magnet, said cover having a bottom surface, said bottom surface having an outer peripheral portion; a plurality of polyethylene terephthalate (PET) sheets connected to a plurality of positions of the outer peripheral portion of the bottom surface of said cover such that said PET sheets are spaced from one another; and a synthetic resin sheet, having a first side, a second side and a central portion, said synthetic resin sheet being connected to the bottom surface of said cover such that said first side of said synthetic resin sheet covers the bottom surface of said cover and said PET sheets; and a central PET sheet connected to the central portion of said second side of said synthetic resin sheet, wherein said PET sheets are positioned outside said central portion.
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14. A plane antenna comprising:
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a resin case; an antenna element positionable in said resin case; a circuit board, positionable in said case, having circuit elements, said resin case including a bottom cover and a top cover for covering the surface of the bottom cover, said bottom cover including a storage space, said storage space having an opening for receiving said antenna element and said circuit board; and a waterproof sheet positioned between said top cover and said bottom cover such that said waterproof sheet covers at least said opening in the storage space of said bottom cover. - View Dependent Claims (15, 16, 17)
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Specification